Revision as of 08:07, 1 February 2021 by ColorfulGalaxy(talk | contribs)(Note that "Half-blockade" redirects to "Blockade", but "Blockade" did not mention "Half-blockade". The half-blockade can be constructed using 2 gliders.)
The blockade is a common formation of four blocks and is one of the familiar fours. A common evolutionary sequence that leads to its formation is known as lumps of muck, which can be seen by letting the stairstep hexomino evolve.